A small village in the north of the national parc La Doñana, where the virgin of El Rocio is celebrated every year on the second day of the Pentecost (wikipedia). The pilgrimage is typically performed by horse or by foot.
Muelle de las Carabelas (Huelva)
In this museum the three ships which Christopher Columbus used for is first expedition are replicated and exhibited. All four expeditions he started in Palos de La Frontera, just next to Huelva.